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EXC.V12
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1993-02-14
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REVISIONS FOR VERSION 1.2 OF EXC.EXE
Many thanks to the few users who have reported problems and/or suggested
enhancements. If you don't report them and I don't find them, they don't
get fixed.
1. Timeout processing was malfunctioning for WAITSCR. Fixed.
2. READ and LOOK were mistakenly included in v1.1 documentation, but are
not actually implemented until v1.2.
3. In 1.1 and older, the maximum screen size was 80x50. EXC returned an
error if you were in a larger screen mode. Also I had to obtain a 8,000
byte buffer (character + attribute) to read the 80x50 screen regardless
of the text mode you were using.
I must preallocte the screen buffer because the spawned program may
consume all remaining memory. I can't just use the current video
settings since the spawned program may change the text mode.
I have added a command "SCRMAX cols rows" that allows preallocation of
buffers for large screen sizes. The default, if SCRMAX is not in the
script, will be the rows and columns of the text mode in use when EXC is
invoked. Please read the documentation under SCRMAX for full usage
instructions and the implications and penalties involved in reserving
large screen buffers.
This prevents wasting memory in screen sizes smaller than 80x50 and
allows EXC to fully function on screens larger than 80x50.
Supported screen widths are from 40-200 columns. Supported screen
heights are from 20-100 rows.